To migrate data from a legacy system to Manufacturing Cloud, the administrator should follow the recommended order of data import. This order ensures that the data dependencies and relationships are maintained and that the data integrity is preserved. The recommended order of data import is as follows1:

Accounts: This is the first object to import, as it represents the customers and their details. Accounts are related to Sales Agreements and Orders, so they must be imported before them.

Sales Agreements: This is the second object to import, as it represents the contractual agreements between the customers and the manufacturer. Sales Agreements are related to Sales Agreement Products and Sales Agreement Schedules, so they must be imported before them.

Sales Agreement Products: This is the third object to import, as it represents the products that are included in the Sales Agreements. Sales Agreement Products are related to Sales Agreement Product Schedules, so they must be imported before them.

Sales Agreement Product Schedules: This is the fourth object to import, as it represents the forecasted quantities and prices of the Sales Agreement Products over time. Sales Agreement Product Schedules are related to Orders, so they must be imported before them.

Orders: This is the fifth and final object to import, as it represents the actual orders placed by the customers. Orders are related to Order Products, which are automatically created when the Orders are imported.

Therefore, the correct answer is B. Accounts, Sales Agreements, Sales Agreements Schedules, Orders. References: Import Data into Manufacturing Cloud